img {
  width: 100%;
  margin-bottom: 20px;
}
.iconfont {
  position: fixed;
  width: 30px;
  height: 30px;
  margin-top: 10px;
  margin-left: 10px;
  text-align: center;
  line-height: 30px;
}
#courseContent {
  height: 60px;
  padding: 0px 30px;
  border-bottom: 1px solid #000;
}
#topTitle {
  margin-bottom: 10px;
}
#left {
  margin-left: 125px;
}
#courseBtn {
  width: 100%;
  height: 40px;
  background-color: #4294FF;
  border-radius: 20px;
  margin-top: 80px;
  text-align: center;
  line-height: 40px;
  color: #fff;
}
#courseData {
  margin-top: 30px;
}
